After I Transmigrated into a Book, I Made the Plot Go Off the Rails

[Strong Female Lead + Fantasy + Growth-Oriented Female Protagonist + Ensemble Cast] Liu Bai transmigrates into a book. If she wants to return to the real world, she has no choice but to complete the tasks given by the System. System: Task one, save Xu Zhiyan, who's hopelessly love-struck. Liu Bai: Easy. How about I just kill the male lead? System: ??? Are you crazy? She has to complete tasks in a world of magic, but isn't given a spell core; The male lead, Song Xu, has a damaged spell core, but no one can diagnose it; A riot at the February Fair makes the male and female leads meet earlier than they should; A strange, inexplicable malice feels just like the past she remembers... The plot falls apart right from the beginning. This world is strange, and so is the System. The people in the world of the book want to leave it, while the people observing that world want to go home, too. “If one day, whether you leave or stay determines the survival of an entire world, what would you choose?”